messageContent.ts

import {
  ChatMessage,
  ContextItem,
  MessageContent,
  MessagePart,
  TextMessagePart,
} from "../index";

export function stripImages(messageContent: MessageContent): string {
  if (typeof messageContent === "string") {
    return messageContent;
  }

  return messageContent
    .filter((part) => part.type === "text")
    .map((part) => (part as TextMessagePart).text)
    .join("\n");
}

export function renderChatMessageWithoutThinking(message: ChatMessage): string {
  if (message.role === "thinking") return "";
  return renderChatMessage(message);
}

export function renderChatMessage(message: ChatMessage): string {
  switch (message?.role) {
    case "user":
    case "assistant":
    case "thinking":
    case "system":
      return stripImages(message.content);
    case "tool":
      return message.content;
    default:
      return "";
  }
}

export function renderContextItems(contextItems: ContextItem[]): string {
  return contextItems.map((item) => item.content).join("\n\n");
}

export function renderContextItemsWithStatus(contextItems: any[]): string {
  return contextItems
    .map((item) => {
      let result = item.content;

      // If this item has a status, append it directly after the content
      if (item.status) {
        result += `\n[Status: ${item.status}]`;
      }

      return result;
    })
    .join("\n\n");
}

export function normalizeToMessageParts(message: ChatMessage): MessagePart[] {
  switch (message.role) {
    case "user":
    case "assistant":
    case "thinking":
    case "system":
      return Array.isArray(message.content)
        ? message.content
        : [{ type: "text", text: message.content }];
    case "tool":
      return [{ type: "text", text: message.content }];
  }
}